Home / 13,645.31-20,465.67-3,785.58

Finding the Fourth Proportional to 13,645.31, 20,465.67 and 3,785.58

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Solution

The fourth proportional to 13,645.31, 20,465.67 and 3,785.58 is: 5,677.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.31 : 20,465.67 = 3,785.58 : x
  2. Step 2: Convert to fraction form
    13,645.31/20,465.67 = 3,785.58/x
  3. Step 3: Cross multiply
    13,645.31x = 20,465.67 × 3,785.58
  4. Step 4: Simplify right side
    13,645.31x = 77,474,431.04
  5. Step 5: Solve for x
    x = 77,474,431.04/13,645.31
  6. Step 6: Final answer
    x = 5,677.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.